Tân Sơn Nhất International Airport (IATA: SGN, ICAO: VVTS) is an international airport serving Ho Chi Minh City, the most populous city in Vietnam. The airport is located in the Tân Bình district within the Ho Chi Minh City metropolitan area.

It is the busiest airport in Vietnam, with 32.5 million passengers in 2016, 38.5 million passengers in 2018, and about 41 million passengers in 2023. As of December 2023, it is the 50th-busiest airport in the world, and the second-busiest in Southeast Asia. As of April 2024, it has a total capacity of only around 30 million passengers, which has caused constant and increasing traffic and congestion, hence it has sparked debates for expanding or building a new airport, of which the plan of the new airport as an alternative is under construction since 2021, and will be completed by 2025.

Of the routes the airport serves, the domestic Ho Chi Minh City–Hanoi route is the busiest in Southeast Asia and the fourth-busiest in the world, serving around 11 million passengers in 2023. Its IATA airport code, SGN, is derived from the city's former name of Saigon.